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GBIT 19868.2-20051ISO 15611:2003
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Welding procedure qualification based on previous welding experience
(ISO 15611:2003, Specification and qualification of welding procedures for
metallic materials-Qualification based on previous welding experience,IDT)
2
GB_T 19868.2-2005 基于焊接经验的工艺评定.pdf
